Stock-Based Compensation - Stock Option Activity 1 (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options Outstanding	1,260,465
Options Outstanding, Weighted Average Remaining Life (years)	5 years 1 month 6 days
Options Outstanding, Aggregate Intrinsic Value	$ 548
Options Exercisable	300,356
Options Exercisable, Weighted Average Remaining Life (years)	10 months 24 days
Options Exercisable, Aggregate Intrinsic Value	$ 167
2017 Performance-based Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options Outstanding, Exercise Prices	$ 513.5	$ 513.5
Options Outstanding	300,356	625,825
Options Outstanding, Weighted Average Remaining Life (years)	10 months 24 days
Options Outstanding, Aggregate Intrinsic Value	$ 167
Options Exercisable, Exercise Prices	$ 513.5
Options Exercisable	300,356
Options Exercisable, Weighted Average Remaining Life (years)	10 months 24 days
Options Exercisable, Aggregate Intrinsic Value	$ 167
2023 Performance-based Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options Outstanding, Exercise Prices	$ 673.58
Options Outstanding	678,732
Options Outstanding, Weighted Average Remaining Life (years)	6 years 4 months 24 days
Options Outstanding, Aggregate Intrinsic Value	$ 269
Options Exercisable, Exercise Prices	$ 673.58
Options Exercisable	0
Options Exercisable, Weighted Average Remaining Life (years)	0 years
Options Exercisable, Aggregate Intrinsic Value	$ 0
2023 Time-based Options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Options Outstanding, Exercise Prices	$ 673.58
Options Outstanding	281,377
Options Outstanding, Weighted Average Remaining Life (years)	6 years 4 months 24 days
Options Outstanding, Aggregate Intrinsic Value	$ 112
Options Exercisable, Exercise Prices	$ 673.58
Options Exercisable	0
Options Exercisable, Weighted Average Remaining Life (years)	0 years
Options Exercisable, Aggregate Intrinsic Value	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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